Change Audio Pitch
Shift the pitch of any audio file up or down without changing its speed — free, in your browser.
100% in your browser
No watermark
No sign-up
How it works
- Select an audio file — it never leaves your device.
- Drag the slider to choose how many semitones to shift (−12 to +12).
- Click the shift button — the audio is re-pitched locally in your browser.
- Your adjusted audio downloads automatically.
Frequently asked questions
- Is my audio uploaded anywhere?
- No. The pitch shift runs entirely in your browser using ffmpeg.wasm. Your file never leaves your device.
- Does pitch shifting affect the speed or tempo?
- No. The tool uses asetrate to shift the pitch and atempo to compensate the tempo back, so the duration stays the same.
- What does one semitone mean?
- A semitone is one step on the musical scale — 12 semitones equal one octave. +12 doubles the frequency (one octave up), −12 halves it (one octave down).
- Which file formats are supported?
- Any format ffmpeg.wasm can decode: MP3, WAV, OGG, M4A, FLAC, and more. The output keeps the same format as the input.